happy-dom
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Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.
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JavaScript
import DOMException from '../exception/DOMException.js';
import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum.js';
const HTML_INVALID_ATTRIBUTE_NAME_CHARACTER_REGEX = /[\x00-\x1F\x7F\x80-\x9F "\'><=\/\uFDD0-\uFDEF\uFFFE\uFFFF\u1FFFE\u1FFFF\u2FFFE\u2FFFF\u3FFFE\u3FFFF\u4FFFE\u4FFFF\u5FFFE\u5FFFF\u6FFFE\u6FFFF\u7FFFE\u7FFFF\u8FFFE\u8FFFF\u9FFFE\u9FFFF\uAFFFE\uAFFFF\uBFFFE\uBFFFF\uCFFFE\uCFFFF\uDFFFE\uDFFFF\uEFFFE\uEFFFF\uFFFFE\uFFFFF\u10FFFE\u10FFFF]/;
/**
* Attribute utility
*/
export class AttributeUtility {
/**
*
* @param name the attribute name
* @param contentType the attribute has to be valid in
* @param context the context in which the error occurred in
* @param context.method
* @param context.instance
*/
static validateAttributeName(name, contentType, context) {
const { method, instance } = context;
if (contentType === 'text/html') {
const normalizedName = String(name).toLowerCase();
if (HTML_INVALID_ATTRIBUTE_NAME_CHARACTER_REGEX.test(normalizedName) ||
normalizedName.length === 0 ||
normalizedName[0] === '-') {
throw new DOMException(`Uncaught InvalidCharacterError: Failed to execute '${method}' on '${instance}': '${name}' is not a valid attribute name.`, DOMExceptionNameEnum.invalidCharacterError);
}
}
// TODO: implement XML and other content types
}
}
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